-5.41% is the change from 868 to 821
Calculation steps:
[( 821 - 868 ) ÷ 868] x 100 = -5.41%
Formula
Percentage change = [(821 - 868) / 868] x 100
Subtract the new number by the original number
821 - 868 = -47
-47 ÷ 868 = -0.05414746543778802
-0.05414746543778802 x 100 = -5.41%